/// <summary>
        /// Ouverture de la fenêtre Gestion Commerciale
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void GestionCommerciale_Click(object sender, EventArgs e)
        {
            if (this.frmPrinc == null)
            {
                this.frmPrinc = new frmDsp();

                frmPrinc.MdiParent = this;
                frmPrinc.Show();
            }
            else
            {
                this.frmPrinc.Activate();
            }
        }
 public void fermeAffichageClient()
 {
     this.frmPrinc = null;
 }
 private void fermeFenetreAffiche(object sender, FormClosingEventArgs e)
 {
     this.frmPrinc = null;
 }